Guitar Tube Amp Bias Calculator
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Suggested Midpoint (mA): (range: )
Guitar Tube Amp - Power Tubes
| Power Tube Type | Base Type | Max Plate Dissipation (Watts) | Common Characteristics |
|---|---|---|---|
| EL84 / 6BQ5 | Noval | 12 | Small, 9-pin design; famous for British "chime." |
| 6V6GT | Octal | 12 - 14 | Small 8-pin bottle; classic American "sweet" tone. |
| 6L6GC | Octal | 30 | Large bottle; high headroom and big bottom end. |
| EL34 | Octal | 25 | Standard British power tube; aggressive mid-range. |
| 6550 | Octal | 35 - 42 | Very sturdy; high power and low distortion. |
| KT66 | Octal | 25 - 30 | Larger glass envelope; smooth, vintage blues response. |
| KT88 | Octal | 35 - 42 | High-fidelity, massive power, and clean headroom. |
| 5881 | Octal | 23 - 25 | Compact 6L6 variant; rugged and slightly "dirtier." |
| 6CA7 | Octal | 25 | Hybrid sound; EL34 power with 6L6-like clarity. |
| KT120 | Octal | 60 | Massive modern tube; requires heavy-duty transformers. |